Perhaps you should try some spelling variations:
thanh le » thinh le, thanh ve, thanh de
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
cua tre » cuu tre, cua triet, dua tren
lam luc » lao luc, lam duoc
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
tang ha » lang ha, trung ha, tang van
tang ma » mang may, tang van
va lam » van lam, va lap
luc va » duc va, tuc va, loc va
cua te » cua tu

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((tang ha) OR (tang ma)) hoi. hieu va lam luc va thanh le ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((tang ha) or (tang ma)) hoi. hieu va lam luc va thanh le ((cua tre) OR (cua te))~".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((tang ha) or (tang ma)) hoi. hieu va lam luc va thanh le ((cua tre) OR (cua te))*.